Portion of a powder cap for a liquid container



FIG. 1 is a front perspective view of a portion of a powder cap for a liquid container showing our new design in closed position;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a right side elevation view thereof, the left side being a mirror image;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines in the drawings represent environmental subject matter and form no part of the claimed design. 

The ornamental design for a portion of a powder cap for a liquid container, as shown and described. 